coronal mass ejection

noun

: a tremendous outburst of energy from the corona of the sun that can cause disruptions in the earth's geomagnetic field
As they had for the January eruption, the researchers relied on an armada of spacecraft to track the disturbance, known as a coronal mass ejection because it originates in the sun's outer atmosphere, or corona.R. Cowen
abbreviation CME
compare solar flare

Examples of coronal mass ejection in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The National Oceanic and Atmospheric Administration's Space Weather Prediction Center announced on Wednesday that a new G4-magnitude solar storm is imminent following a recent solar flare and a rapid coronal mass ejection headed toward Earth. Brandi D. Addison, Austin American-Statesman, 22 Nov. 2024 Magnetic storms triggered by solar activity, such as solar flares or coronal mass ejections, cause them. Haadiza Ogwude, The Enquirer, 11 Oct. 2024 The National Oceanic and Atmospheric Administration's Space Weather Prediction Center reported that a coronal mass ejection occurred on October 8, when solar material and magnetic fields erupted. Laura Daniella Sepulveda, The Arizona Republic, 11 Oct. 2024 Over the last several months the sun has been incredibly active, unleashing a series of coronal mass ejections from its surface, CBS Boston reported. Kerry Breen, CBS News, 11 Oct. 2024 See all Example Sentences for coronal mass ejection 

Word History

First Known Use

1974, in the meaning defined above

Time Traveler
The first known use of coronal mass ejection was in 1974

Dictionary Entries Near coronal mass ejection

Cite this Entry

“Coronal mass ejection.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coronal%20mass%20ejection. Accessed 26 Nov. 2024.

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!